Home / 4,777.16-7,165.74-1,315.40

Finding the Fourth Proportional to 4,777.16, 7,165.74 and 1,315.40

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Solution

The fourth proportional to 4,777.16, 7,165.74 and 1,315.40 is: 1,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,777.16 : 7,165.74 = 1,315.40 : x
  2. Step 2: Convert to fraction form
    4,777.16/7,165.74 = 1,315.40/x
  3. Step 3: Cross multiply
    4,777.16x = 7,165.74 × 1,315.40
  4. Step 4: Simplify right side
    4,777.16x = 9,425,814.40
  5. Step 5: Solve for x
    x = 9,425,814.40/4,777.16
  6. Step 6: Final answer
    x = 1,973.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.